Socket



FIG. 1 is a front-right-top perspective view of the socket showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear front elevational view thereof; and,

FIG. 4 is a left side elevational view thereof.

The broken lines in the drawings illustrate portions of the socket which form no part of the claimed design. 

CLAIM The ornamental design for a socket, as shown and described. 